Segment Reporting - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Net Sales:
Total net sales	$ 210,267	$ 213,831	$ 656,109	$ 690,047
Cost of Goods Sold:
Total cost of goods sold	167,498	169,340	518,105	543,459
Design and Development:
Total design and development	14,454	17,643	50,984	53,703
Other Segment Costs:
Total other segment costs	31,594	26,533	96,125	88,832
Operating (Loss) Income:
Total operating (loss) income	(3,279)	315	(9,105)	4,053
Depreciation and Amortization:
Total depreciation and amortization	9,502	8,829	24,349	25,963
Interest Expense (Income), net:
Total interest expense, net	3,801	3,604	10,102	11,039
Capital Expenditures:
Total capital expenditures	5,914	4,908	13,970	14,865
Total Assets:
Total assets	632,079		632,079		$ 621,556
Control Devices
Net Sales:
Total net sales	71,629	73,129	210,873	230,186
Electronics
Net Sales:
Total net sales	121,496	127,483	398,960	422,777
Stoneridge Brazil
Net Sales:
Total net sales	17,142	13,219	46,276	37,084
Inter-segment sales \| Control Devices
Net Sales:
Total net sales	875	1,160	2,642	2,946
Inter-segment sales \| Electronics
Net Sales:
Total net sales	6,542	8,184	19,162	22,492
Inter-segment sales \| Stoneridge Brazil
Net Sales:
Total net sales	1,720	411	2,267	610
Operating Segments \| Control Devices
Net Sales:
Total net sales	72,504	74,289	213,515	233,132
Cost of Goods Sold:
Total cost of goods sold	60,928	60,319	176,537	190,369
Design and Development:
Total design and development	3,930	5,047	11,928	14,998
Other Segment Costs:
Total other segment costs	5,573	5,632	17,480	16,797
Operating (Loss) Income:
Total operating (loss) income	1,198	2,131	4,929	8,020
Depreciation and Amortization:
Total depreciation and amortization	2,962	3,152	7,414	8,821
Interest Expense (Income), net:
Total interest expense, net	(4)	9	(178)	(10)
Capital Expenditures:
Total capital expenditures	1,459	2,914	3,618	6,018
Total Assets:
Total assets	132,302		132,302		136,028
Operating Segments \| Electronics
Net Sales:
Total net sales	128,038	135,667	418,122	445,269
Cost of Goods Sold:
Total cost of goods sold	96,835	101,291	313,854	331,074
Design and Development:
Total design and development	8,788	11,548	34,235	33,957
Other Segment Costs:
Total other segment costs	10,001	11,130	36,755	37,312
Operating (Loss) Income:
Total operating (loss) income	5,871	3,514	14,115	20,434
Depreciation and Amortization:
Total depreciation and amortization	5,002	4,030	12,514	11,794
Interest Expense (Income), net:
Total interest expense, net	250	283	683	1,387
Capital Expenditures:
Total capital expenditures	1,660	1,298	6,580	5,652
Total Assets:
Total assets	385,113		385,113		365,226
Operating Segments \| Stoneridge Brazil
Net Sales:
Total net sales	18,862	13,630	48,543	37,694
Cost of Goods Sold:
Total cost of goods sold	9,387	7,702	27,611	21,840
Design and Development:
Total design and development	612	857	2,106	2,445
Other Segment Costs:
Total other segment costs	4,459	3,943	12,321	11,920
Operating (Loss) Income:
Total operating (loss) income	2,684	717	4,238	880
Depreciation and Amortization:
Total depreciation and amortization	1,199	1,155	3,434	3,652
Interest Expense (Income), net:
Total interest expense, net	(295)	(204)	(662)	(798)
Capital Expenditures:
Total capital expenditures	2,243	484	2,939	2,223
Total Assets:
Total assets	62,060		62,060		48,280
Eliminations
Net Sales:
Total net sales	(9,137)	(9,755)	(24,071)	(26,048)
Total Assets:
Total assets	(395,836)		(395,836)		(399,771)
Unallocated Corporate
Cost of Goods Sold:
Total cost of goods sold	348	28	103	176
Design and Development:
Total design and development	1,124	191	2,715	2,303
Other Segment Costs:
Total other segment costs	11,561	5,828	29,569	22,803
Operating (Loss) Income:
Total operating (loss) income	(13,032)	(6,047)	(32,387)	(25,281)
Depreciation and Amortization:
Total depreciation and amortization	339	492	987	1,696
Interest Expense (Income), net:
Total interest expense, net	3,850	3,516	10,259	10,460
Capital Expenditures:
Total capital expenditures	552	$ 212	833	$ 972
Total Assets:
Total assets	$ 448,440		$ 448,440		$ 471,793

STONERIDGE INC 10-Q